Barcelona are stepping up their efforts to sign Spain star Nico Williams from Athletic Bilbao, widespread media reports in Spain said on Tuesday. According to the newspaper Sport, the Catalans and new coach Hansi Flick are “absolutely crazy” about signing the 21-year-old winger. However, Barça still have financial problems and Williams only signed a new deal with Bilbao until 2027 in December. The buy-out clause is said to be €60 million ($64 million). “I only recently extended my contract at Athletic, I feel very comfortable there. I’m very happy,” he recently told TV station TVE. “It feels v…